This is one of a number of self-portraits painted by Freud during the 1940s. Freud has used a realistic, but emblematic, style which derives from Old Master paintings of the Northern Renaissance.
The artist shows himself looking through a window at a spiky thistle resting on a ledge in the foreground. At the same time, the thistle may also be read as an emblem occupying flattened space at the bottom of the painting. This ambiguity allows the thistle to be interpreted as a real object, but also as a device which suggests the mood of the painting and Freud's own psychological state.